--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/Calendar/Bug8152077.java Tue Mar 29 18:04:41 2016 +0900
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8152077
+ * @summary Make sure that roll() with HOUR/HOUR_OF_DAY works around standard/daylight
+ * time transitions
+ */
+
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+import static java.util.Calendar.*;
+
+public class Bug8152077 {
+ private static final TimeZone LA = TimeZone.getTimeZone("America/Los_Angeles");
+ private static final TimeZone BR = TimeZone.getTimeZone("America/Sao_Paulo");
+
+ private static final int[] ALLDAY_HOURS = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+ 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
+ };
+ private static final int[] AM_HOURS = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
+ };
+ private static final int[] PM_HOURS = { // in 24-hour clock
+ 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
+ };
+
+ private static int errors;
+
+ public static void main(String[] args) {
+ TimeZone initialTz = TimeZone.getDefault();
+ try {
+ testRoll(LA, new int[] { 2016, MARCH, 13 },
+ new int[] { 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+ 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 });
+ testRoll(LA, new int[] { 2016, MARCH, 13 },
+ new int[] { 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11 });
+ testRoll(LA, new int[] { 2016, MARCH, 13 }, PM_HOURS);
+
+ testRoll(LA, new int[] { 2016, NOVEMBER, 6 }, ALLDAY_HOURS);
+ testRoll(LA, new int[] { 2016, NOVEMBER, 6 }, AM_HOURS);
+ testRoll(LA, new int[] { 2016, NOVEMBER, 6 }, PM_HOURS);
+
+ testRoll(BR, new int[] { 2016, FEBRUARY, 21 }, ALLDAY_HOURS);
+ testRoll(BR, new int[] { 2016, FEBRUARY, 21 }, AM_HOURS);
+ testRoll(BR, new int[] { 2016, FEBRUARY, 21 }, PM_HOURS);
+
+ testRoll(BR, new int[] { 2016, OCTOBER, 15 }, ALLDAY_HOURS);
+ testRoll(BR, new int[] { 2016, OCTOBER, 15 }, PM_HOURS);
+ testRoll(BR, new int[] { 2016, OCTOBER, 16 },
+ new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+ 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 });
+ testRoll(BR, new int[] { 2016, OCTOBER, 16 },
+ new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 });
+ testRoll(BR, new int[] { 2016, OCTOBER, 16 }, PM_HOURS);
+ } finally {
+ TimeZone.setDefault(initialTz);
+ }
+ if (errors > 0) {
+ throw new RuntimeException("Test failed");
+ }
+ }
+
+ private static void testRoll(TimeZone tz, int[] params, int[] sequence) {
+ TimeZone.setDefault(tz);
+ for (int i = 0; i < sequence.length; i++) {
+ testRoll(+1, params, sequence, i);
+ testRoll(-1, params, sequence, i);
+ }
+ }
+
+ // amount must be 1 or -1.
+ private static void testRoll(int amount, int[] params, int[] sequence, int startIndex) {
+ int year = params[0];
+ int month = params[1];
+ int dayOfMonth = params[2];
+ int hourOfDay = sequence[startIndex];
+ Calendar cal = new GregorianCalendar(year, month, dayOfMonth,
+ hourOfDay, 0, 0);
+ int ampm = cal.get(AM_PM);
+
+ int length = sequence.length;
+ int count = length * 2;
+ int field = (length > 12) ? HOUR_OF_DAY : HOUR;
+
+ System.out.printf("roll(%s, %2d) starting from %s%n",
+ (field == HOUR) ? "HOUR" : "HOUR_OF_DAY", amount, cal.getTime());
+ for (int i = 0; i < count; i++) {
+ int index = (amount > 0) ? (startIndex + i + 1) % length
+ : Math.floorMod(startIndex - i - 1, length);
+ int expected = sequence[index];
+ if (field == HOUR) {
+ expected %= 12;
+ }
+ cal.roll(field, amount);
+ int value = cal.get(field);
+ if (value != expected) {
+ System.out.println("Unexpected field value: got=" + value
+ + ", expected=" + expected);
+ errors++;
+ }
+ if (cal.get(DAY_OF_MONTH) != dayOfMonth) {
+ System.out.println("DAY_OF_MONTH changed: " + dayOfMonth
+ + " to " + cal.get(DAY_OF_MONTH));
+ }
+ if (field == HOUR && cal.get(AM_PM) != ampm) {
+ System.out.println("AM_PM changed: " + ampm + " to " + cal.get(AM_PM));
+ errors++;
+ }
+ }
+ }
+}